Marian Bihrle Johnson, M.P.H., is a senior research associate and improvement advisor at the Institute for Healthcare Improvement. She is a lead on the IHI research and development team for which she researches and tests innovative content to inform IHI’s programs and to further IHI’s strategic priorities. She also leads research and policy initiatives related to several IHI programs, including a program to coordinate care for Medicare–Medicaid enrollees and a multistate initiative to reduce avoidable rehospitalizations. Prior to joining IHI, Ms. Johnson was a research scientist at the Institute for Technology Assessment at Massachusetts General Hospital, performing comparative effectiveness analyses on emerging medical treatments and diagnostic tools. She received a master’s degree in public health from the Dartmouth College Institute for Health Policy and Clinical Practice.